/Engine/Source/Runtime/Core/Public/Internationalization/Text.h
See TextBiDi::ComputeTextDirection
[ETextDirection](API\Runtime\Core\Internationalization\TextBiDi__ETextDirection) ComputeTextDirection ( const [FText](API\Runtime\Core\Internationalization\FText) & InText, const [ETextDirection](API\Runtime\Core\Internationalization\TextBiDi__ETextDirection) InBaseDirection, [TArray](API\Runtime\Core\Containers\TArray)< [FTextDirectionInfo](API\Runtime\Core\Internationalization\FTextDirectionInfo) > & OutTextDirectionInfo )